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US 11,306,851 B2Granted
Sealing sleeve for pipe offsets
AssigneeUhrig Kanaltechnik GmbH
InventorChristian Bechler
Life of this patent
Estimating the term…
Abstract
A sealing inner sleeve for inserting into pipes, includes two frustoconical or substantially cylindrically bent-round sleeves formed of steel sheets, wherein the free ends of the steel sheets of the sleeves overlap in their circumferential directions and an arresting device is arranged in each of these overlapping regions and wherein the two sleeves are arranged at a distance from one another in a deformable jacket tube.
Claims3
Sealing inner sleeve for inserting into axially offset pipes, comprising:
- two bent-round sleeves formed of steel sheets, said bent-round sleeves having inner and outer surfaces and being frustoconical in the form of a truncated cone which is frustoconical on the inner surface and frustoconical on the outer surface and are arranged in such a way that smaller openings of the two sleeves are located opposite of each other,
- the two sleeves being unconnected with each other,
- wherein the steel sheets of the sleeves include free ends that overlap in overlapping areas in circumferential directions thereof,
- an arresting device arranged in each of these overlapping areas which permits expansion of the sleeves to an expanded configuration and which retains the sleeves in the expanded configuration, and
- a deformable jacket tube in which the two sleeves are arranged at a distance from one another, the jacket tube being formed as a wound jacket tube with areas overlapping in the circumferential direction of the jacket tube and being in direct contact with the sleeves when expanded,
- a tubular sealing element covering the jacket tube, and
- annularly extending sealing ribs arranged in an area of opposite free ends at an outer circumference of the tubular sealing element.
4 more elements
Dependencies are inferred from the claim text.